Radio set construction



Oct. 6 1936. E. c. BOOTH 2,056,917

RADIO SET CONSTRUCTION Filed NOV. 30, 1934 15/7/24 C15 00 TH,

Patented Oct. 6, 1936 PATENT OFFICE RADIO SET CONSTRUCTION Earl C. Booth, Columbus, Ind., assignor to Noblitt-Sparks Industri s, Inc., Columbus, Ind., a

corporation of Indiana Application November 30, 1934, Serial No. 755,285 5 Claims. (01. 250-16) My invention is concerned with radio apparatus and has for its particular object the mounting of fixed condensers and similar parts in the chassis of the radio set. More specifically, it is 5 my object to produce a mounting for a condenser or similar part which will provide firm support and which may be economically and simply constructed.

In carrying out my invention I provide on the 1 condenser or other part to be supported an outwardly extending annular flange which may be formed on a. ring which is secured to the supported part. At the place where the part is to be mounted, Iprovide the chassis-frame with an 15 opening of a diameter larger than the part itself but smaller than the outer diameter of the annular fiangeon the ring; and, I provide means for clamping the flange to the chassis-frame.

The accompanying drawing illustrates three 20 embodiments of my invention: Figs. 1 and 2 are end and side elevations respectively of a condenser mounted in a chassis-frame; Figs. 3 and 4 are views similar respectively to Figs. 1 and 2, but showing a modified form of mounting; Fig. 5 is 25 a view similar to Fig. 3, but showing the condenser in the process of being inserted into its mounting; and Figs. 6 and 7 are views similar respectively to Figs. 1 and 2, but showing a modified form of condenser.

30 In the arrangement illustrated in Fig. 1, my

mounting is shown as supporting a fixed condenser having an outer sheet-metal shell 10. Intermediate its ends, the shell I0 is provided exteriorly with a peripheral bead ll forming a 35 shoulder against which is located a ring l2 which, like the shell in, is conveniently of sheetmetal. The ring 12 is firmly secured to the shell 10, as by having a press-fit thereon.

The chassis-frame of the radio set, a portion of 40 which is indicated at 14 in the drawing, is conveniently of sheet-metal and provided with an opening large enough to permit the insertion of the shell l0 and the seating against the chassisframe 14 of an annular flange l5 on the ring.

45 The flange I5 is secured against the face of the chassis-frame [4 by means of screws 16 which are screw-threadedly received in the chassisframe and the heads of which overlap the flange l5. Conveniently there are two of the screws [6 50 located at diametrically opposite points.

If desired, the flange l5 may be provided at diametrically opposite points with notches I! which, by rotation of the condenser, can be brought respectively into juxtaposition with the 55 heads of the screws I6, whereby the condenser may be removed from its mounting without the necessity for completely removing the screws 16 from the chassis-frame M.

The arrangement illustrated in Figs. 3, 4, and 5 is similar to that shown in Figs. 1 and 2 except for the means employed to hold the flange [5 on the ring 12 against the face of the chassisframe I4. In this arrangement, the chassisframe 14 is provided at diametrically opposite points withv two struck-up fingers 20, the free 1 ends of which are directed inwardly to overlap the flange l5 when the condenser is in place. The flange on the ring is interrupted or notched at diametrically opposite points, as indicated at 2|, so that by rotating the condenser to bring 15 the interruptions or notches into juxtaposition with the fingers 20 the condenser can be removed from association with its mounting by axial movement. If desired, the condenser-receiving opening in the chassis-frame may be 0 shaped, as indicated in Fig. 5, where the condenser is shown in process of being inserted, to permit the complete passage of the condenser and its flange I5 through the chassis-frame, thus making it possible to insert the condenser into its mounting from either side of the frame.

The construction illustrated in Figs. 6 and '7 is substantially identical with that shown in Figs. 1 and 2 except that the condenser, instead of having a metal enclosing shell, is provided exteriorly with a covering 25 of paper or other similar material suitably impregnated with an insulating agent. In this case, the bead I I is omitted and friction between the ring 12 and the covering 25 is depended upon for preventing relative axial movement of the condenser and ring. To secure a firm engagement of the ring upon the condenser, the body of the ring may be collapsed by radial pressure when in place on the condenser.

In the case of the condenser illustrated in Figs. 1 to 5 inclusive, the shell 10, ring I 2, and chassisframe 14 are all of metal, so that those elements of the condenser which require grounding may be connected internally to the shell It]. In the case of the condenser illustrated in Figs. 6 and 7, the covering 25 of insulating material prevents this method of grounding elements of the condenser; and to secure the desired grounding, a lea-d 26 may be brought out from the condenser and electrically connected to the ring 12.

While I have illustrated and described my invention as employed for the purpose of mounting a condenser, it will be obvious that it can be employed for mounting other elements of a radio set.

I claim as my invention:

1. In a radio set, a condenser having a cylindrical metal shell provided with an outwardly projecting annular flange disposed between the ends of the shell, a metal chassis frame having an opening for the reception of said shell, and a plurality of screws mounted in said frame in angularly space-d relation about said opening and having heads adapted to' engage said flange and: hold it z seated against said frame, said flange being cut away at intervals corresponding to the spacing of said screws to permit axial removal of the cone denser when such cut-away portionstoi. theflange.

are in respective alinement with saidscrew-heads, said condenser having one orvm'ore leads extend-- ing through an end of said shell;

2. In a radio set, a condenser having a cylindrical metal shell provided with-.anxoutwardly-pro jecting annular flange, a metal chassis frame having an opening, and a plurality of screws mounted.

in said frame in angularly, spaced relation about said opening and havingheads adapted to engage said flange and holditseatedflagainst said frame said v flange beinglcut away,- at" intervals corresponding .to the spacinglof'saidscrews to permit axialremoval ofthe condenser when suchcutaway portions of the flange are in respective.

alinement with said screw-heads, said condenser having one or more, leads extending through and: longitudinally beyond an end of 'said'shell, the as-, sembly of condenser andilea'ds extending through said. opening;

3; In a radio set, aicondenser having a.cylindrical' metal shell provided with an outwardly projecting annular flange a metal'chassisframe,

andla plurality of screws mounted in said frame.

in angularly spaced relation and'having'heads adapted to engage said flange andhold it. seated said frame for securing said shell in place, said means. comprising parts disposed in angularly spaced relation about said opening and spaced from-said. frame fonthe reception of said flange, saidiflangea being cut away at intervals corresponding: t'o1the spacing of said parts to permit .axiaL removal ofthe condenser when such cutaway portions of the flange are in respective alinement with said parts.

5. In a.radiow set, a condenserhaving a cylindrical metal shell provided with an outwardly projecting annular flange; ameta'lchassis'frame havingan opening, and means on saidiframe for securing .said' shell in place, said means. comprise inglparts disposed in. angularly spacedmelation. about said opening and spaced .irom. saidirame for the reception of said flange, said flangebeing.

cut away at intervalscorresponding to -thezspacing-of said-parts to permit axialcremoval-lofithec condenser when such cut-away portions: of T the:.. flange are in respectiveialinement with said parts,--

said condenserhaving one-or more leads extending through and longitudinally beyond an end of 'said shell, the assembly of condenser and leads-extend ing through said'opening;

EARL C. BOOTH. 

